Blow-0ff for steam-boilers.



Patented Aug. |4,' |900.

C. R. PABTINGTON.

BLOW-OFF FOB STEAM BOILEBS.

(Application led Ap; 25, 1900.).

(No Model.)

m: Nonms PETERS co. PHoTo-Llmo.. wAsnmcroN, u. c.

UNrrnDf ATENT FFrCE.

CLARENQE R. PARTINGTON, OF RICHMOND, VIRGINIA.

ABLOVV-OFF FOR STE'l-UViBOlLERS.`

SPECIFICATION forming partbf yLetters Patent o. 6575,9'88, dated August14, 1900.

Applicatie-flied April 25, 1900.

To a/ZZ whom it' may concern: p

Be it known that I, CLARENCE R. PARTING-- TON, a citizen of the UnitedStates, anda resident of Richmond, county of Henrico, State of Virginia,have invented certain new and useful Improvements in Blow-Offs forlSteam- Boilers, of which the following is a specication, referencebeing had herein to the accompanying drawings, in which- Y Figure 1 is avertical longitudinal sectiona view of a blow-off pipe provided with myinvention, and Fig. 2 a plan view thereof, the furnace-wall in bothviews being omitted.

The object of the invention is to provide a simple device for preventingthe clogging of the blow-off pipe by the lodging of mud there# in; andit consists of certain novelfeatures of construction hereinafterdescribed and claimed. N

Referring to the drawings by reference-letters, a designates a portionof the steamboiler, and b the usual blow-off pipe connected to theboiler at its bottom and near one end and extending out through the wallof the furnace (not shown herein) and provided at a point outside of thewall With the usual blow-off cock c. The main part ofthe blow-off pipeis horizontal, and itsvinner end is turned upward to enter the bottom ofthe boiler, this vertical part being connected to the horizontal part bya suitable elbow connection; but it is obvious that the blow-off pipemay have as many bends orturns as in practice may be desirable,Extending the entire length of the main part of the blow-off pipe andinclosed therein is a rod d, preferably hollow an'd provided at frequentintervals with radial pins e. This rod extends from a point close to thecock c into the elbow connect-ing the inner end of the pipe to thevertical portion thereof, and atl this latter end it is pivotallyconnected to the downwardlyturned end of a bell-crank f, pivotallysupported in the elbow.- The other end of this bell-crankis pivotallyconnected to a short vertical rod g, which is also provided with radialpins e at short intervals, and has its upper end guided by a suitablestar-plate or spider h, secured to the interior of the boiler over theopening leading into Athe'blow-off serai no. 14.330. intimen.)

pipe,.the rod g beingprovided Vwith collars i on opposite sides of saidstar-plate to limit the movement of the rod g.

Interposed in the pipe b at a point near the cock is an enlarged casingj, Within which is pi-voted another bell-crank k, the depending arm ofwhich is pivotally connected to rod d and the horizontal arm of` whichis connected by a pin-and-'slot connection to the inner Vend of a stemZ, which reciprocates through a stuffing-box m and is pivotallyconnected at its upper end to a hand-lever n, this lever being pivotallyconnected at one end to an upright link 0, whose lower end is pivotallyconnected to a lug or ear formed integral with a short tube p,connecting the stufngbox to the top of the casing j. This tube pis'screwed into an opening in the top of the casing and is threadedeXteriorly at its upper end for the reception of the gland of thepacking-box. This tube is also enlarged internally forl the reception ofa guiding-collar q on Ithe stem Z.

It will be'V observed that by reciprocating the stem Z by means of itslever a reciprocating movement will be imparted through the bell-cranksto the rods d and g and that the pins carried by these rods will agitateand dislodge any mud or sediment that may have collected in the piping,sol that the mud or other sediment may pass freely through the blow-offcock when the sameis open. As will be observed, the agitators may beoperated previous to opening the coclc'or during the blowing-6d process,as may ,be found expedientg. It will bethusobserved that it will beimpossible with my improvement for the blow-off vpipe to be clogged bythe caking of mud therein, thus avoiding a serious objection lto theblow-off pipes now in general use. As is well known, with the blow-odpipes as now generally constructed the mud settles into the same and isbaked hard therein by the action of the re of the furnace, so that whenthe blow-off cock is opened thebalned mud plugs up the same. As isobvious, I entirely avoid this objection .byv providing' a cleaner oragitator that extends'throughou't the entire length of piping from theopening' into the boiler close to the blow-off cock.

IOO

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

l. In a blow-off device for steam-boilers, the combination of a boiler,a blow-oit pipe connected thereto and provided with a blowo cock at adist-ance from the boiler, a casing in the pipe between the cock and theboiler, an agitator inclosed in the pipe and extending from the cock,through the casing and to the opening into the boiler, and me'ansextending into said casing for moving the agitator.

2. In combination, a boiler, a blow-off pipe provided with a cock at adistance from the boiler, a reciprocating agitator inclosed in the pipeand extending from the cock to the boiler, and devices for reciprocatingsaid agitator.

3. The combination, a boiler, a blow-olf pipe consisting of a verticalpart and ahorizontal part, the latter part being provided with a cock,reciprocating agitator-rods extending through both parts of the pipe andconnected together, a casing interposed in the horizontal pipe,areciprocating stem Working through this casing, a bell-crank connectingthe inner end of the stem to the reciprocating rod, and means foroperating the stem.

4. The combination, of a boiler, a blow-off pipe consisting of avertical part and a substantially-horizontal part connected thereto, thelatter part being provided with a blow-oil:l cock at a distance from theboiler,a reciprocating rod in each part of the pipe and provided withradial pins, means for guiding the Vertical rod,1neans forconnectingitto the adjacent end of the horizontal rod, and means for reciprocatingboth rods, consisting of a device attached to the horizontal rod at apoint between the blow-off cock and the vertical pipe.

In testimony whereof I hereunto aiix my signature,lin the presence oftwo witnesses, this 21st day of April, 1900.

CLARENCE R. PARTINGTON. Witnesses:

C. M. DABNEY, E. E. WALKER.

